Ryzen 9 9955HX
16C/32T · 5.4 GHz · 55 W TDP · FL1 · PassMark #215
Ryzen 9 9900X
Zen 5 · 12C/24T · 5.6 GHz · AM5
Ryzen 9 9900X takes it — here’s why.
In our weighted Specdex score, Ryzen 9 9955HX lands at 31 and Ryzen 9 9900X at 92. That puts Ryzen 9 9900X ahead by 61 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Ryzen 9 9955HX if…
- ✓PassMark CPU Mark of 56,057 — solid multi-thread numbers
- ✓Mainstream desktop flagship core count
Pick Ryzen 9 9900X if…
- ✓12 cores at 5.6 GHz boost
- ✓120 W TDP — cooler than 9950X
- ✓AM5 platform longevity
Winner by scenario
Derived from the sub-score breakdown · not a separate testValue for money
Ryzen 9 9900XSpecdex score per dollar at MSRP
Ryzen 9 9900X more score per dollar ($499 vs $549).
Score breakdown
Specs side-by-side
| Spec | Ryzen 9 9955HX | Ryzen 9 9900X |
|---|---|---|
| Cores | ▲ 16 | 12 |
| Threads | ▲ 32 | 24 |
| Base clock | 2.5 GHz | 4.4 GHz |
| Boost clock | 5.4 GHz | 5.6 GHz |
| L3 cache | 64 MB | 64 MB |
| TDP | 55 W | 120 W |
| Socket | FL1 | AM5 |
| Class | Desktop, Laptop | — |
| PassMark rank | #215 of 5,901 | — |
| PassMark CPU Mark | 56,057 | — |
| Process | — | TSMC N4X |
| iGPU | — | Radeon Graphics (RDNA 2, 2 CUs) |
| Memory | — | DDR5-5600 dual-channel |
Ryzen 9 9955HX
- +PassMark CPU Mark of 56,057 — solid multi-thread numbers
- +Mainstream desktop flagship core count
- −Requires recent-generation motherboard and DDR5 memory
- −Newer-generation parts pull ahead in current rankings
Ryzen 9 9900X
- +12 cores at 5.6 GHz boost
- +120 W TDP — cooler than 9950X
- +AM5 platform longevity
- −9950X edges it on multi-thread
- −9800X3D beats it on gaming
- −$499 puts it close to higher-tier
FAQ: Ryzen 9 9955HX vs Ryzen 9 9900X
Which is better, Ryzen 9 9955HX or Ryzen 9 9900X? +
Ryzen 9 9900X scores 92 on our weighted rubric — ahead by 61. Your best pick depends on the sub-scores above.
Is Ryzen 9 9955HX worth the price? +
At $549, Ryzen 9 9955HX delivers a Specdex score of 31 — strongest in passmark.
Is Ryzen 9 9900X worth the price? +
At $499, Ryzen 9 9900X delivers a Specdex score of 92 — strongest in multi.
Does Ryzen 9 9955HX or Ryzen 9 9900X last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.
Which is the better value, Ryzen 9 9955HX or Ryzen 9 9900X? +
Ryzen 9 9900X — more score per dollar ($499 vs $549). Specdex score per dollar at MSRP.